Opening combined type driving wrench for narrow space and using method of opening combined type driving wrench

Abstract

The invention discloses an open combined type driving wrench for a narrow space and a using method of the open combined type driving wrench. The wrench comprises a wrench body, a transmission assembly is arranged in the wrench body, one end of the wrench body is provided with a wrench ring connected with the transmission assembly, and a clamping sleeve is arranged in a rail of the wrench ring; wherein the clamping sleeve comprises a semi-ring piece arranged in the wrench ring track and a plurality of arc-shaped pieces connected with the semi-ring piece, the arc-shaped pieces and the semi-ring piece form a complete ring-shaped structure, the arc-shaped pieces and the semi-ring piece are connected through first pins, and every two adjacent arc-shaped pieces are connected through first pins. Related equipment at the two ends of the connecting rod does not need to be disassembled, small-torque fastening operation and large-torque fastening operation can be rapidly carried out according to needs, the safety risk of personnel and equipment injury is greatly reduced, meanwhile, manpower and time are saved, and the risk of stroke precision deviation caused by repeated disassembly and assembly of the connecting rod is avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of drive wrenches, and in particular relates to an open-ended combined drive wrench for a narrow space and a use method thereof. Background Art

[0002] In the field of machinery, it is difficult to tighten the connecting rod intermediate nut. Since both ends of the connecting rod are often connected to related transmission accessories, in order to set the wrench on the nut, an open-end wrench is usually used for tightening.

[0003] However, in the tightening operation scenario of the connecting rod type intermediate nut with a large torque of more than 1000NM, the open-end wrench is easy to slip when tightening the bolt, especially in the tightening scenario of large torque, there is a certain safety risk of personnel and equipment injury. In order to avoid slipping and ensure the safety of personnel, wrenches such as plum wrenches are often used for operations. However, when using plum wrenches, it is necessary to remove the related equipment at both ends of the connecting rod, and then insert the plum wrench from the axial direction of the connecting rod, and then put it on the nut for operation. This tightening method is not only cumbersome in operation, resulting in a large waste of manpower and construction time, but also requires multiple disassembly and connection of the connecting rod connection accessories, resulting in deviation in the connecting rod connection stroke accuracy, excessive transmission torque of the equipment, impact damage to the equipment, and fatigue damage to the equipment connection keys. Summary of the invention

[0004] The purpose of the present invention is to overcome the defects of the prior art and provide an open combined drive wrench for a narrow space and a method of using the same. A ferrule for fixing a nut is provided at one end of the wrench body. The combined design of the ferrule means that there is no need to remove the relevant equipment at both ends of the connecting rod. By clamping a semi-ring part on the nut, small torque operations can be performed. When large torque operations are required, multiple arc parts are sequentially connected to the semi-ring parts to form a complete annular structure to fix the nut, and large torque tightening operations can be performed. Multiple arc parts are convenient to engage with the nut when installed sequentially, which is convenient for operators to fix the nut in a narrow space, greatly reducing the safety risks of personal and equipment injuries, while saving manpower and time, and avoiding the risk of deviation in the stroke accuracy of the connecting rod caused by multiple disassembly and assembly of the connecting rod.

[0005] The object of the present invention is achieved through the following technical solutions:

[0006] An open-ended combined drive wrench for a narrow space and a method for using the same, comprising a wrench body, a transmission assembly disposed in the wrench body, a wrench ring connected to the transmission assembly at one end of the wrench body, a ferrule disposed in a track of the wrench ring;

[0007] Wherein, the ferrule comprises a semi-ring member arranged in the wrench ring track and a plurality of arc-shaped members connected to the semi-ring member, the plurality of arc-shaped members and the semi-ring member form a complete annular structure, and the arc-shaped member and the semi-ring member and two adjacent arc-shaped members are connected by a first pin;

[0008] In one embodiment, a plurality of ferrules are arranged in the track of the wrench ring, and two adjacent ferrules are connected by a second pin;

[0009] Through this embodiment, the thickness of the ferrule in the wrench ring can be adjusted according to the thickness of the nut to be disassembled and assembled, so that it can fully contact the nut, especially when operating with high torque, to ensure the quality of disassembly and assembly.

[0010] In one embodiment, the transmission assembly includes a driving cylinder disposed in the wrench body and a piston rod disposed in the driving cylinder, the driving cylinder is connected to a hydraulic pump through a hydraulic pipeline, one end of the piston rod is connected to a transmission head, and the transmission head is connected to the wrench ring through a transmission key;

[0011] In one embodiment, the wrench body has a first oil circuit and a second oil circuit connected to the driving oil cylinder, the first oil circuit is connected to the cavity between the end of the driving oil cylinder and the piston rod, the second oil circuit is connected to the cavity in the piston rod, the first oil circuit and the second oil circuit are connected to the hydraulic pump through a joint and a hydraulic pipeline, and an angle rotation component is also provided between the joint and the first oil circuit and the second oil circuit;

[0012] Through this embodiment, in a small space, due to the interference of the hydraulic pipeline of the hydraulic wrench, it is difficult to use the hydraulic wrench for tightening, which limits the large torque tightening operation. In this embodiment, an angle rotation component is used to connect the first oil circuit and the second oil circuit with the joint, thereby facilitating the spatial position adjustment of the pipeline connected to the joint, so as to improve the applicability scenarios of the driving wrench.

[0013] In one embodiment, the first oil circuit and the second oil circuit of the wrench body are adjacently arranged, one end of the angle rotation assembly is connected to the first oil circuit and the second oil circuit, and the other end is connected to the first joint and the second joint respectively;

[0014] Through this implementation, that is, using an angle rotation component to connect to the first oil circuit and the second oil circuit at the same time, it is convenient to connect to the hydraulic pump and also convenient for the operator to adjust the angle of the pipeline connected to the joint. The two oil circuits cooperate with each other to drive the piston rod to move in different directions, so as to drive the wrench ring to drive the sleeve to tighten or loosen the nut.

[0015] In one embodiment, the angle rotation structure includes a first rotation assembly and a second rotation assembly, one end of the first rotation assembly is connected to the first joint and the second joint, and the other end is hinged to the second rotation assembly, and the second rotation assembly is sleeved on the oil passage port, and the oil passage port is respectively connected to the first oil passage and the second oil passage;

[0016] Through this embodiment, that is, the first rotating assembly hinged on the second rotating assembly rotates in one direction, and the second rotating assembly rotates in the oil circuit along a direction perpendicular to the rotation direction of the first rotating assembly, so that the pipeline connected to the joint can be freely adjusted in space.

[0017] In one embodiment, the angle rotation assembly is mounted on one side of the wrench body, and a wrench seat plate is also mounted on the other side of the wrench body, and the wrench seat plate extends obliquely away from one side of the wrench body;

[0018] Through this embodiment, the obliquely extended wrench base is used to abut against the components near the nut to be disassembled, so as to resist the reaction force during the driving process of the wrench.

[0019] In one embodiment, the semi-ring member further has an angle disc;

[0020] Through this embodiment, the operator can observe the rotation state of the nut when the nut is being installed or removed.

[0021] The present invention also provides an open-ended combined drive wrench for use in a narrow space, comprising the following steps:

[0022] Step S1, obtaining the tightening torque required for the nut to be disassembled and assembled, and installing the arc-shaped member on the semi-ring member according to the tightening torque required for the nut;

[0023] Step S2, placing the base of the wrench against a structural member near the nut;

[0024] Step S3, driving the hydraulic pump to drive the nut.

[0025] In one embodiment, in step S1, it also includes:

[0026] The angle rotation assembly connected to the wrench body is adjusted to allow the hydraulic oil pipe connected to the wrench body to extend in a narrow space.

[0027] The beneficial effects of the present invention are:

[0028] (1) A ferrule for fixing the nut is provided at one end of the wrench body. The ferrule modular design means that there is no need to remove the related equipment at both ends of the connecting rod. By clamping the semi-ring member on the nut, small torque operations can be performed. When large torque operations are required, multiple arc-shaped members are sequentially connected to the semi-ring member to form a complete ring structure to fix the nut, and large torque tightening operations can be performed. When multiple arc-shaped members are sequentially installed, they are convenient to engage with the nut, making it easy for operators to fix the nut in a small space, greatly reducing the safety risks of personnel and equipment injuries, while saving manpower and time, and avoiding the risk of stroke accuracy deviation caused by multiple disassembly and assembly of the connecting rod.

[0029] (2) The angle rotation structure and the wrench base plate are respectively arranged on both sides of the wrench body. The angle of the hydraulic pipeline is adjusted by using the angle rotation structure, which is convenient for using the hydraulic wrench in a narrow space. At the same time, the wrench base plate supports the wrench body on the other side to resist the reaction force of the tightening process and ensure stable operation of the wrench. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The present invention will be described in more detail below based on embodiments and with reference to the accompanying drawings, wherein:

[0031] Figure 1 Shows a schematic diagram of the structure of the present invention;

[0032] Figure 2 A schematic diagram showing the structure of a half ring member of the present invention is shown;

[0033] Figure 3 A schematic diagram showing the structure of multiple arc-shaped members of the present invention is shown;

[0034] In the drawings, like reference numerals are used for like parts. The drawings are not necessarily to scale.

[0035] Reference numerals:

[0036] 1-wrench body, 2-wrench ring, 3-semi-ring member, 4-arc-shaped member, 5-first joint, 6-second joint, 7-first rotating assembly, 8-second rotating assembly, 9-first pin, 10-dial, 11-wrench base plate, 12-hydraulic cylinder, 13-piston rod, 14-first oil circuit, 15-second oil circuit. DETAILED DESCRIPTION

[0037] The present invention will be further described below in conjunction with the accompanying drawings.

[0038] The present invention provides an open-ended combined drive wrench for use in a narrow space and a method of using the same. Figures 1 to 3 As shown, it comprises a wrench body 1, a transmission assembly is arranged in the wrench body 1, one end of the wrench body 1 has a wrench ring 2 connected with the transmission assembly, and a ferrule is arranged in the track of the wrench ring 2;

[0039] The ferrule includes a semi-ring member 3 arranged in the track of the wrench ring 2 and a plurality of arc-shaped members 4 connected to the semi-ring member 3. The plurality of arc-shaped members 4 and the semi-ring member 3 form a complete annular structure. The arc-shaped member 4 and the semi-ring member 3 and two adjacent arc-shaped members 4 are connected by a first pin 9.

[0040] Specifically, the semi-ring member 3 and the arc-shaped member 4 are provided with corresponding through holes;

[0041] It should be noted that if Figure 1 As shown, the semi-ring member 3 is arranged in the track of the wrench ring 2, and the two ends of the semi-ring member 3 can be connected to the arc member 4 through the first pin 9, that is, there is no need to dismantle the relevant equipment at the two ends of the connecting rod. In a small torque working environment, the semi-ring member 3 can be used to clamp the nut. In a large torque working environment, in order to avoid slipping, the arc members 4 are sequentially connected at both ends of the semi-ring member 3 until a complete annular structure is formed to completely clamp the nut. In the process of completely clamping the nut, multiple arc members are sequentially fitted around the circumference of the nut, which is convenient for operators to install in a small space, greatly reducing the safety risks of personnel and equipment injuries, while saving manpower and time, and avoiding the risk of multiple disassembly and assembly of the connecting rod causing its stroke accuracy deviation;

[0042] In one embodiment, a plurality of ferrules are arranged in the track of the wrench ring 2, and two adjacent ferrules are connected by a second pin, that is, the thickness of the ferrule in the wrench ring 2 can be adjusted according to the thickness of the nut to be disassembled and assembled, so that the ferrule can fully contact the nut, especially when operating with a large torque, to avoid slipping and damage to the nut, thereby ensuring the quality of disassembly and assembly;

[0043] In one embodiment, Figure 1 As shown, the transmission assembly includes a driving cylinder arranged in the wrench body 1 and a piston rod 13 arranged in the driving cylinder. The driving cylinder is connected to the hydraulic pump through a hydraulic pipeline. One end of the piston rod 13 is connected to a transmission head, and the transmission head is connected to the wrench ring 2 through a transmission key.

[0044] Specifically, the wrench body 1 has a first oil circuit 14 and a second oil circuit 15 connected to the driving oil cylinder. The first oil circuit 14 is connected to the cavity between the end of the driving oil cylinder and the piston rod 13, and the second oil circuit 15 is connected to the cavity in the piston rod 13. The first oil circuit 14 and the second oil circuit 15 are connected to the hydraulic pump through a joint and a hydraulic pipeline. An angle rotation component is also provided between the joint and the first oil circuit 14 and the second oil circuit 15.

[0045] It should be noted that when the hydraulic pump is used to drive the hydraulic oil into the driving cylinder and enters the cavity between the cylinder end and the piston rod 13, the piston rod 13 is driven to move in the direction close to the transmission head, and when the hydraulic oil is driven into the cavity in the piston rod 13, the piston rod 13 is driven to move in the direction away from the transmission head, thereby tightening or loosening the nut. The angle rotation component is used to adjust the angle of the joint, thereby facilitating the adjustment of the hydraulic pipeline connected to the joint in a narrow space, thereby improving the application range of the wrench;

[0046] Specifically, Figure 1 As shown, the openings of the first oil circuit 14 and the second oil circuit 15 of the wrench body 1 are arranged adjacent to each other, one end of the angle rotation component is connected to the openings of the first oil circuit 14 and the second oil circuit 15, and the other end is respectively connected to the first joint 5 and the second joint 6, the angle rotation structure includes a first rotation assembly 7 and a second rotation assembly 8, one end of the first rotation assembly 7 is connected to the first joint 5 and the second joint 6, and the other end is hinged on the second rotation assembly 8, the second rotation assembly 8 is sleeved on the oil circuit opening, and the oil circuit opening is respectively connected to the first oil circuit 14 and the second oil circuit 15;

[0047] It should be noted that the first rotating assembly 7 has two independent oil circuits, which are connected to the first oil circuit 14 and the second oil circuit 15 respectively. The first rotating assembly 7 is hinged on the second rotating assembly 8, and the hinge can be used as the oil circuit channel of the first rotating assembly 7 and the second rotating assembly 8, that is, when the first rotating assembly 7 rotates around the second rotating assembly 8, the inlet and outlet of the hydraulic oil are not affected. At the same time, the second rotating assembly 8 is sleeved on the oil circuit port, and the second rotating assembly 8 can rotate 360° in the horizontal direction around the oil circuit port. The two oil circuits therein remain connected to the oil circuit of the oil circuit port. The oil circuit port can be a flange structure, the middle cylinder is connected to the first oil circuit 14, and a plurality of through holes are provided on the end cover structure on the cylinder to connect to the second oil circuit 15. One oil circuit of the second rotating assembly 8 is connected to the cylinder and rotates along the cylinder, and the other oil circuit is connected to the plurality of through holes on the end cover structure.

[0048] In one embodiment, Figure 1 As shown, the angle rotation assembly is installed on one side of the wrench body 1, and a wrench seat plate 11 is also installed on the other side of the wrench body 1. The wrench seat plate 11 extends obliquely away from one side of the wrench body 1. The angle rotation structure and the wrench seat plate 11 are respectively arranged on both sides of the wrench body 1. The angle of the hydraulic pipeline is adjusted by using the angle rotation structure, which is convenient for using the hydraulic wrench in a narrow space. At the same time, the wrench seat plate 11 supports the wrench body 1 on the other side, that is, the obliquely extended wrench base is used to contact with the components near the nut to be disassembled and assembled, so as to resist the reaction force during the wrench driving process;

[0049] In one embodiment, the half ring 2 is also provided with an angle plate 10, which is convenient for the operator to observe the rotation state of the nut when disassembling the nut;

[0050] The present invention also provides an open-ended combined drive wrench for use in a narrow space, comprising the following steps:

[0051] Step S1, obtaining the tightening torque required for the nut to be disassembled and assembled, and installing the arc-shaped member on the semi-ring member according to the tightening torque required for the nut;

[0052] Step S2, placing the base of the wrench against a structural member near the nut;

[0053] Step S3, driving the hydraulic pump to drive the nut.

[0054] Specifically, in step S1, it also includes:

[0055] Adjust the angle rotation assembly connected to the wrench body to allow the hydraulic oil pipe connected to the wrench body to extend in a narrow space;

[0056] It should be noted that if Figures 1 to 3 As shown, the open-end combined drive wrench for narrow space is convenient for adjusting the opening angle according to the torque required for the nut to be disassembled in a narrow space, without disassembling the device connected to the connecting rod structure, avoiding the nut from slipping during the disassembly process, and the adjustment method is simple, which is convenient for operators to make adjustments in a limited space;

[0057] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "bottom", "top", "front", "back", "inside", "outside", "left", "right", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0058] Although the present invention is described herein with reference to specific embodiments, it should be understood that these embodiments are merely examples of the principles and applications of the present invention. It should therefore be understood that many modifications may be made to the exemplary embodiments and that other arrangements may be devised without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that the various dependent claims and features described herein may be combined in a manner different from that described in the original claims. It should also be understood that features described in conjunction with individual embodiments may be used in other described embodiments.

Claims

1. An open-ended modular drive wrench for use in a narrow space, characterized in that: It comprises a wrench body, a transmission assembly is arranged in the wrench body, one end of the wrench body has a wrench ring connected with the transmission assembly, and a ferrule is arranged in the track of the wrench ring; Among them, the ferrule includes a semi-ring part arranged in the wrench ring track and a plurality of arc-shaped parts connected to the semi-ring part. The plurality of arc-shaped parts and the semi-ring part form a complete annular structure. The arc-shaped parts and the semi-ring parts and two adjacent arc-shaped parts are connected by a first pin.

2. The open-ended modular drive wrench for use in a narrow space according to claim 1, characterized in that: A plurality of ferrules are arranged in the track of the wrench ring, and two adjacent ferrules are connected by a second pin.

3. The open-ended modular drive wrench for use in a narrow space according to claim 1, characterized in that: The transmission assembly includes a driving cylinder arranged in the wrench body and a piston rod arranged in the driving cylinder. The driving cylinder is connected to the hydraulic pump through a hydraulic pipeline. One end of the piston rod is connected to a transmission head, and the transmission head is connected to the wrench ring through a transmission key.

4. The open-ended modular drive wrench for use in a narrow space according to claim 3, characterized in that: The wrench body has a first oil circuit and a second oil circuit connected to the driving cylinder, the first oil circuit is connected to the cavity between the end of the driving cylinder and the piston rod, the second oil circuit is connected to the cavity in the piston rod, the first oil circuit and the second oil circuit are both connected to the hydraulic pump through a joint and a hydraulic pipeline, and an angle rotation component is also provided between the joint and the first oil circuit and the second oil circuit.

5. The open-ended modular drive wrench for use in a narrow space according to claim 4, characterized in that: The first oil circuit and the second oil circuit of the wrench body are adjacently arranged, one end of the angle rotation assembly is connected to the first oil circuit and the second oil circuit, and the other end is respectively connected to the first joint and the second joint.

6. The open-ended modular drive wrench for use in a narrow space according to claim 5, characterized in that: The angle rotation structure includes a first rotating assembly and a second rotating assembly. One end of the first rotating assembly is connected to the first joint and the second joint, and the other end is hinged on the second rotating assembly. The second rotating assembly is sleeved on the oil circuit port, and the oil circuit port is respectively connected to the first oil circuit and the second oil circuit.

7. The open-ended modular drive wrench for use in a narrow space according to claim 4, characterized in that: The angle rotation assembly is installed on one side of the wrench body, and a wrench seat plate is also installed on the other side of the wrench body. The wrench seat plate extends obliquely away from one side of the wrench body.

8. The open-ended modular drive wrench for use in a narrow space according to claim 1, characterized in that: The semi-ring member is also provided with an angle disk.

9. A method for using an open-ended modular drive wrench for a narrow space, using the open-ended modular drive wrench for a narrow space as claimed in any one of claims 1 to 8, characterized in that: include: Step S1, obtaining the tightening torque required for the nut to be disassembled and assembled, and installing the arc-shaped member on the semi-ring member according to the tightening torque required for the nut; Step S2, placing the base of the wrench against a structural member near the nut; Step S3, driving the hydraulic pump to drive the nut.

10. The method for using the open-ended modular drive wrench for a narrow space according to claim 9, characterized in that: In step S1, it also includes: The angle rotation assembly connected to the wrench body is adjusted to allow the hydraulic oil pipe connected to the wrench body to extend in a narrow space.

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